What contribution did the catholic church make to society during the early middle ages?

The contribution that the Catholic Church hopes this helps 

Besides the preservation of Classical knowledge and language (Greek and Latin), not much. The Church controlled every aspect of life at that time and the result was the "Dark Ages."

It developed as a reaction to the impact of european colonialism in africa on peoples of african descent. in the  mid-20th century, activists in africa adopted pan-africanism as a rallying cry for independence from colonial rule. some african pan-africanists sought to unite the continent as one independenthope it was useful